objective questions set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following has shortest carbon-carbon bond length?

a) C₂H₄

b) C₂H₆

c) C₂H₂

d) C₆H₆

Question : 2

Match List-I with List-II :

a) A – 4, B – 3, C – 1, D – 2

b) A – 5, B – 1, C – 2, D – 3

c) A – 5, B – 1, C – 3, D – 2

d) A – 4, B – 3, C – 1, D – 2

Question : 3

Gas welding used for welding broken pieces of iron, we normally use a mixture of :

a) ethene and oxygen

b) ethyne and oxygen

c) ethane and oxygen

d) ethene and air